Study seeks super agers' secrets to brain health

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In this July 29, 2013 photo, a researcher holds a human brain in a laboratory at Northwestern University's cognitive neurology and Alzheimer's disease center in Chicago. Researchers at the university are looking at the rare group of "super agers" _ men and women who are in their 80s and 90s, but with brains and memories that seem far younger. They hope that they may find ways to help protect others from memory loss. (AP Photo/Scott Eisen)